Chaffer for thrashers



Dec 18, 1928.

S. W. CADY CHAFFER FOR THRASHERS Filed June 1927 2 Sheets-Sheet 2 jfiz wmcmldfa d w/ Patented Dec. 18, 1928. i

UNITED STATES SHERMAN W 7 VESTER COMPANY, A CORPORATION NEW JERSEY. I

' crrhrrnnron THBAsHEns. 1

Application filed Junc, i927. "Serial n. 196,671.

This'inv'ention relates to thrashingma chines and particula'rly to a chafler attachme'ntjfor such machines. v

Thrashers as now known and us'edin the) art embody a body in which is arranged Inechanism, tor Separating the grain from the chute at the discharge end of the machine, which catches the straw, and then 'by' neans 'this housing andforms it into a .exteriorly of the machine;

Thrasher mensometimes pile or stack or pile the chafi exteriorlyofthe machine.

achieved in combination with ia conventionallViththese general thoughts; in j1nind,'the objects of this invention are generally to 1m prove and simplify the construction and operation of the so called chaffer attachments for tachment which will utilize air pressures built up adjacent the periphery ofthe straw stack er fan for moving the chaifto the chafier I stacker fan; and,l1astly, to provide asim le,

effective means embodying an opening 5 and a deflector which will direct'theseairpressures in the mostefi'ectlve mannerto accomplish this result Y Briefly, these very desirable, ob ectsI are type of thrasher, embodying a body having therein straw walkers which; discharge straw into a strawho u'sin'g, and achafi'er' screen for catchingthe chafi, of .a vstraw chuteat the bottom of the'stra' wihousingfor cate'hingthe straw fromthestraw, walkers, associated with a suction,"straw, wind stacker fan for taking the straw from the straw housing straw chute,there.further bein a second or'chatf .wind stacker fan Which ta es the chaff fromga 'chaflerlchutef fed theIcha-tfer screen to ex up air pressures. adjacent its periphery-and,

" by meanseof anflopenin [and a deflector inlthe fan housing adjacent t is portion .ofthe' straw chanical means, such-as angers orthe like, for advancing chaff into the chafl blower fan.

In the. accompanying sheets ofv drawings I h blower removed straw,ther'e being a straw housing and straw V' place; V I dejem'it advisable Figure 4-is a horizontal; sectional vieW to separate the chaff from the grain and straw,and, by mea nsof a secondary chute and wind stacker mechanism, similarly stack the straw in a pile oni the groundexteriorly of the machine; A return pelthe chali from-the, machine; The straw. A I v suction fan or the straw wind stackerbuildslefiective structure for accomplishing this} i V l I V :resultf It-willbe described. v eb dy ft-heir; thrasher includes a ohafi'er screen 20 Whichis Q r arranged; to catchthe chaifand dischargeitl', 105 which'chute leads into anotheror secondary .1

illustrating one form which this invention mayassume'lnpraoticez Y CADY, or RICHMOND, mmnnmnsslenon r0 rnzrnmm'rronnnnnm Figure 1 is a. general side elevational view 7 of the rear-end of athra sher the proximate side of the straw housing and chatter Figure 2 is a rear verticalsectional view centrally through the straw F igure 3 is a rear 'elevational view of the I 7 housing, showing the two wlnd stacker fansgj f 1 of a, wind stacker discharges the straw from x 657,51

thrasher 'Wltli chafier attachment'jin through the straw housing, showing the 'ar rangement of the straw andchaffer chutes,

tor associated with the chaffer chute; and

Figure'6 is" an exterior "face view .o fthe wall of the straw stacker fan, Showing onan enlarged scale, the opening. thrashing mach1nes; to prov desuch'an at 1 Looking to Figures 1 and 3, that the thrasher is of standard construction in 1nost 11'espects, it embodying ajrear axle. 10journaled in carrying wheels 11, which axle supports a thrasher body11 2, adjacent the.

having an' inclined bottom or chute. 15, which;

discharge wind stacker pipe 19 forstacking under the straw] walkers Some thrasher men, inaddi upper end of whichis arranged the usual set ofstr'aw walker olischargeelements 13, which 'dischargelthe straw intoa straw housingl -Ieadsinto an opening 16";leading to a strawfil wind stacker Suction tanlZ enclosed ina'fan housing 18 communicating with the usu r V e390 3 i ran 18 e mng w: V V

, Y, i ngto me ely separating the grain from thestraw; and] stacking the straw injthe manner describ d,- deem. it desirable also to separate the tchaffrl andstack it on the ground in a pile independ ,Beneath thereturn pan 13,

into v an' oppositely. inclined chafiier chute 21,

entlyof .the'straw pile. This invent-ion come} i I p ehe he emp y e t o a si pl and; i

blower housing .22, which encloses a suction;

" blower fan QBcleading intoastacker discharge 1 .pipe 24;, which mechanism justdescribed com moving the chaff to the chafier fan. I In operation, straw is directed by the The body of the thrasher carriesa partition, or shield, 25, which, as shown in Figure 1, is

arranged between the blower 16 and chafler screen 20 and between the oppositely inclined.

straw chute and chafier. chute 21;.

In operation, the chaff is directed by the screen into the chafier chute 21, the parti tion being inclined in a manner to serve also as a chaff deflector, as will be obvious. The chaff being lighhfiuffy stuff, willac: cumulate on the chute 21, and, as'itsmass is toolightsometimes to cause it to move, by

gravity downthe inclined chute 21, it be comes necessary to provide some means for movingthe chaff into the suction fan 23.

It will be obvious to those skilledin this art that thestraw stackenfan 17 at, its center where it receives the straw from thestraw chute 15 is all suction, ,but at its periphery it is constantly buildlng up pressures for blowing the straw through the pipe 19 and out of the machine. This invention contemplates the utilization of someoi' this air pressure for moving the straw along the bottom cent to its bottom in a manner mostelfective to move the chafi' therealong. Thus, this simple expedient of utilizing some of the air pressure from the straw wind stacker fan 17 obviates the necessity of employingsuch meehanicalmeans as an auger or t strawwalkers 13'over the shield, or partition, 25 and onto the inclined chute bottom 15 of the straw housingl i where thesuction fan 17 of the wind stacker19is effective tosuck the straw and expel-it from the machine to form a straw pile.- The chafier screen 20 dis charges the chafi caught beneath the straw walkers 13 and. dischar es it intozthe' inclined cha'fier chnte21, below theshield or artition 25, where the moon-shaped openlIl g26 inthe wall of the blower, housing 18 adjacent the periphery oithe fan 17" where V the fan is building up air pressures, directs a strong, continuous blast of air through said opening26 and along the bottom of the chaffer chute 21 to move the chaff into the chafi'er blower 23 tobe; expelled from the machine by the wind stacker pipe 24 thereof into a separate pile, as hasbeen described.

From the above detaileddisclOsure, it must now beob'vious that a simpleand effective means has been providedifor sepamtingthe chafl" and directing it into a chafi wind stacker, forming it into a separate pile.

Itis the intention herein to coverall such changes andmodificationsof this invention as do not materially depart therefrom, as is indicated by the scope of the appended claims.

What claimed is: V

1. i The combination with a thrasher having a straw discharge, chuteand a Windstacker,

including a housing, of achafler screen, a chaff discharge chute, and a Second Windstacker, there being an openinginthestraw windstacker housing whereby air under pressure is directed alongvthechafier chute in the.

direction of the, second windstacker.

2. The combination wit-ha thrasher having an inclined straw discharge chute and awindstacker including, a housing, of a chafl'er screen, an oppositely inclined ohafiidiwharge chute, and a second windstackr, there being an opening n the straw windstacker housing wherebyair iunder pressurefis directed across I the chafier. chutein the direction ofthe second, windst-ackelf, l

3., The combination with athrjasher having a straw dischargechute and. a windstacker fan, of a chafier screema chafl'fldischarge chute, and a, second. windstacker' fan, and

means for, directing air under pressure, from the first fan along; thechafier chute-to the second fan,

4. The combination with a thrasher havin an inclined straw discharge chute 'anda win stacker fan havin a housing, of a chafler. screen, an opposite y inclined chafl'discharge chute, a second windstacker fan, and means adjacent the periphery of the straw fan ineluding an opening in'the straw fan housing for directing airjunder pressure along the a straw discharge chute and a windstacker fan including a housing, means in the thrasher for directing straw to said chute, of a chafie'r bottomof the chafierchute to thechaffer fan. a

5. The combinationwith athrasher having screema chafi discharge chute, a second windstackerfan, the.;chafierscreen directing chat! to the chaff chute, a partition between the.

straw and chaff directing means and the two chutes, means adjacent the straw fan including an openingimt'hestraw fan bolls,

ing for directing air from the straw Ian under pressure along the chafier chute to move the chafi'thereon tofthe chaff fan 6.; The combination witha thrasher having! a straw disohar e chute and a windstacker fan including a casing, ofa chafi'erxscii'een, a round bottomed chafi discharge chuteadjacent the straw discharge chute,-a windstacker fan forthe chaifchute, there being an opening in the housingwall adjacent thestraw fan having a. a form corresponding to the curvature of the bOttOIlLOf the chaff chute, whereby air under pressure'is directed across the bottom of the chafier chute from the straw fan in the direction of the chafier fan.

7. In a thrasher, means for moving straw rearwardly, a transversely inclined chute for chafi out of the chatter chute, and deflectormeans including an opening in the straw fan housing for utilizing the back pressure of said fan to direct a blast of air. across the chafler chute in the'direction of the chaff fan. 8. Ina thrasher, means for moving straw rearwardly, atransversely inclined chute for receiving the straw, a fan including a housing for drawing the straw out of the thrasher,

a chafler screen, a second transverse chute inclined oppositely to the first chute" and having a rounded bottom for receiving chaff from the chafler screen, a partition separating the straw 1 moving means and chafier screen, said partition also separating thetwo inclined chutes, a fan for drawing chafi out of the chafier chute, and deflector means ineluding an opening in the housing o f'the straw fan, said opening having a rounded under side conforming with the round bottomed chatter chute to direct back pressure p M air from the straw fan across the chafter chuteinthe direction of the chaff fan.

In testimony whereof I aflix my signature.

' SHERMAN w. CADY. 

